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1、Unit 2 Saving the EarthTopic 2 All these problems are very serious.Section D What can you learn form the short movie?Water is important.Because humans,animals and plants cant live without water.MovieNearly three fourths of the earth is covered with water.water on the earth3/4被被覆盖覆盖/nl/几乎、将近几乎、将近 Whi
2、le there is so much water around the world,we humans are still short of drinking water.So do animals and plants.Do you know why?be short of 缺乏缺乏1.Why is our earth thirsty when of the earth is covered with water?Because about 97%of the water on the earth is sea water and we cant use it for watering p
3、lants or drinking directly.2.What kind of water can humans drink and use?Humans can only drink and use fresh water from places including rivers,lakes and()Although the world is hungry,it is even thirstier.While nearly of the earth is covered with water,we are still short of drinking water.This is be
4、cause about 97%of the water on the earth is sea water.So we cant use it for watering plants or drinking directly.Humans can only drink and use fresh water from places including rivers,lakes and underground.Read and answer.How can we avoid a serious water shortage?,we should save water and not waste
5、it.,we should protect our water resources and not pollute them.,we should discover ways to reuse water.()How can we avoid a serious water shortage?First,we should save water and not waste it.Second,we should protect our water resources and not pollute them.Third,we should discover ways to reuse wate
6、r.Scientists have made some progress in this field.Today,some large cities are reusing their water.But peoples need for water is increasing day by day.We still dont have enough water.What else can we do?Read Paragraph2 and mark T or F.()Scientists havent made any progress in this field.()Water is re
7、used nowhere.()Peoples need for water is increasing day by day.FFTListen to Paragraph3 and fill in the blanks Q:How can we change sea water into fresh water?We need to take the salt away from the sea water.()The sea_ _ have the best answer.There is _ _water in the sea.But we need to _the salt _from
8、the sea water.This is very expensive.If scientists can find cheaper ways to do it,we can _ _ _of the shortage of water.seems toplenty oftakeawaysolve the problembe short ofon the earthuse sth for sth/doing sthavoid sthmake(some)progressin the fieldday by dayseem to do sthplenty of take away the shor
9、tage of1.缺乏缺乏2.在地球上在地球上3.用某物做某事用某物做某事4.避免某事避免某事 5.取得（一些）进步取得（一些）进步6.在这个领域在这个领域7.一天天一天天8.似乎似乎/好像做某事好像做某事9.大量的大量的10.带走、拿走带走、拿走11.的缺乏的缺乏1.2.3.4.5.6.7.8.9.10.11.one by one year by yearstep by step一个接一个一年年一步步 If we want to use the sea water,we must _ _(拿拿走）走）the salt from the sea water.How can we _(避免避免)
10、a serious water shortage?We should _(找到找到)ways to reuse water.Peoples need for water is increasing _(一一天天天天).Although the world is hungry,it is even _(更渴的更渴的)While _(几乎，差不多几乎，差不多)of the earth is covered with water,we are still short of drinking water.take awayavoiddiscoverday by daythirstier nearlyW
11、ater pollutionless fresh water We should protect and save water.How to protect and save water?Example:Pass laws(n.法律法律)against water pollution.Collect and reuse waste water.5.6._Turn off the taps in timeTake a shower instead of a bathstopfrom,pourinto,turn off,tap(水龙头),wash clothes/vegetables,clean
12、the floor,throwintoStop the factories from pouring waste water into rivers.Dont throw litter into the waterAfter we wash clothes or vegetables,we can reuse the water to clean the floor.We learn:1.some words:avoid,discover,thirsty,nearly,law 2.some phrases:day by day,be short of 3.some sentences:(1)B
13、ut peoples need for water is increasing day by day.(2)While nearly of the earth is covered with water,we are still short of drinking water.We can:1.Talk about ways of saving water.2.Summarize and use the indefinite pronoun and adverb correctly.3.Write a proposal.Summary3.Write a proposal(提议提议)about saving water to all the students in your school.My dear friends,Water is very important to human beings.Lets do something to protect and save it.First,_.Second,_.Third,_.Lets try our best to save water and our planet._ _Homework
九年级英语上册Unit2SavingtheearthTopic2AlltheseproblemsareveryseriousSectionD课件新版仁爱版
